DTC Diagnosis Procedure
- CHECK DTC PRIORITY
If DTC P0088 is displayed with DTC P0090, first perform the confirmation procedure (trouble diagnosis) for DTC P0090.
Is applicable DTC detected?
YES>>
Perform diagnosis of applicable. Refer to Confirmation Procedure .
NO>>
GO TO 2.
- CHECK LOW FUEL PRESSURE
Check low fuel pressure. Refer to Work Procedure . Is inspection result normal?
YES>>
GO TO 3.
NO>>
Check low fuel pressure system. Refer to Diagnosis Procedure .
- CHECK HIGH PRESSURE FUEL PUMP
Check high pressure fuel pump. Refer to Component Inspection . Is inspection result normal?
YES>>
GO TO 4.
NO>>
Replace error-detected parts.
- CHECK FUEL LEAKAGE
- Start the engine.
- Visually check that the fuel pump, fuel rail, and fuel piping have no fuel leakage.
Is inspection result normal?
YES>>
Check that the fuel system has no breakage, bend, and crush. Refer to FUEL SYSTEM : Inspection .
NO>>
Replace or replace the error-detected parts.